Spine locks·Cervical spine/Neck vertebrae · Gi & no-gi
Can Opener.
Neck crank from closed guard forcing cervical spine flexion
Risk level
Low
cervical spine/neck vertebrae
Tap urgency
Gradual
tap response
Difficulty
2
/ 5 — setup
Danger level
7
/ 10
Positions
0
entry points
Perm. damage
Yes
irreversible risk
What it is
Neck crank from closed guard forcing cervical spine flexion
What you do
The step-by-step execution breakdown lives in the app — mechanics, tips, and the full entry sequence.
Open1submission detailin the App Store↗Setup complexity
2/10
Learning priority
2/10
Escapability
6/10
Versatility
3/10
Danger level
7/10
01
Tap immediately when you feel neck pressure—don't wait for pain.
02
Cervical flexion damage occurs before sharp pain develops.
03
Cumulative damage risk with repeated exposure in training.
04
Many gyms prohibit this entirely; poor technique despite IBJJF legality.
05
Herniated discs and nerve impingement carry lifelong consequences.
WHITE — LEGALBLUE — LEGALPURPLE — LEGALBROWN — LEGALBLACK — LEGAL
// Can Opener · Spine locks
Drill it.
Log it. Track the tap rate.
Open Can Opener in Grapla to add it to your drilling queue, log every attempt, and watch your finish rate move over the next 30 days.
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